Saw guard



- A. C.'PRABST AND N. E. HOLTE.

SAW sumo.

APPLICATION FILED DEC-29, I921.

Patenhad May 2, 1922.

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ANTHONY C. PRABST AND NORDAHL E. HQLTE, QFYANTIGO, WISCONSIN.

saw GUARD.

Specification (f Letters Patent. fatagntgfi ltiay 2, 1922 Application filed December 29, 1921. Serial No. 525,670.

To (ZZZ whom it may concern:

Be it known that we, ANTHONY Planner and NORDAHL E. Home, citizens of the United States, residing at Antigo, in the county of Langlade and State of Wisconsin, have invented certain'new and useful Improvements in Saw Guards; and we do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains; to make and use the same.

This invention relates to an improved saw guard for use in connection with a circular saw of the type in which the saw is rotatably mounted beneath a workbench and has its upper portion extending through a slot formed in the work bench so that boards may be slid along the top of the work bench and cut as desired by being pushed into engagement with the revolving saw.

One object of the invention is to provide a guard having an'improved type of mounting means which includes an improved type of brackethaving one portion in the form of an arm'which may swing horizontally thus permitting the bracket to be quickly mounted in approximate alinement with the saw blade and the cage mounted for vertical movement, with the cage normally resting upon thetopof the table and enclosing the portion of the saw bladewhich extends above the table.

Another object of the invention is to so construct the bracket that when desired the cage may be swung upwardly out of position for enclosing the saw bladeand the free end portion of the bracket together with the cage then swung to one side.

Another object of the invention is to provide an improved type of coupling carried by the horizontally swinging arm oi the bracket and serving to mount the stem of the saw guard for sliding movement.

Another object of the invention is to so construct this coupling that it may be securely but releasably connected with this horizontally swinging arm. the sleeve porti on of the coupling through which the stem of the housing slidably passes being p0 sitioned at a downward and outward incline and the stem being held against rotation in this sleeve and means being provided for preventing the stem from sliding clownwardly through the sleeve beyond a desired amount. By this arrangement, the stem may be secured against downward moveguard.

ment with the cage suspended in an elevated position if so desired.

Another object of the invention is to so construct this device that when a board 'is moved along the top of the table, and one longitudinal section and the end'portion of the bracket arm in elevation.

' This improved guard is provided with a cage 1 which is semicircular in shape and provided with side walls having slots 2 formed therein and having lips 3 and L at its end, the lip 4t being braced by a web 5 and providing a cam surface so that when a board is slid along the bench or table 6.,

through which the saw 7 extends, the end of the board by engaging the lip 4: may cause the cage to be tilted upwardly upon the lip or heel 3 and then moved vertically so that the board may be slid beneath the It will, thus be seen that the board may behrought into engagement with the revolving saw blade and may be cut by being pushed along the table. Therefore, the saw blade will'be properly covered and the cage will be moved, upwardly by the board as it"is'pushed under the cage. When the board passes beyond the rear end of this cage, the'ca ge drops back into the position shown in Fig. 1. l-linge ears 8 extend upwardly from'th e top of the cage at the center of gravity'and a cage bar or stem 9 which is provided with a plurality of vertically disposed openings 10 is pivotally mounted between these hinge cars by means of a bolt 11 so that the cage bar or stem will be mounted for swinging movement in a vertical plane or in other words, the cage permitted to swing at the end of the cage bar.

The bracket 12 is formed from a metal bar which is preferably rectangular in cross section and is bent to provide a lower tableengaging portion 13 and an upper portion 14 Which extends horizontally. The lower bench tending portion 14 of this bracket terminates in' a flattened head 18 which constitutes a bearing head and will be engaged by a similarly shaped bearing head 19 formed at the inner end of the arm 20. A bolt 21 which forms a pivot pin extends through the heads 18 and 19 and serves to pivotally connect the arm 20 with the horizontally disposed end portion 14: of the bracket. The arm 20 can thus be set at a desired position and the bolt 21 then tightened to secure the arm in this position. This arm is preferably circular in cross section and has its outer end portion fitting into a socket 22 formed in a coupling 23. After the coupling 23 has been put in place upon the end of the arm 20, the set screw 24 will be tightened and the coupling will be securely but releasably held "in place. This coupling terminates'in a sleeve 25 which extends downwardly and outwardly at an incline from the arm-engaging portion of the coupling and is intended to slidably receive the cage bar or stem 9. Since the cage bar is rectangular in cross section and the opening of the sleeve will have a similar shape, this stem will be.

prevented from having turning movement in the sleeve. A pin 26 which is connected with the sleeve by a chain 27 is provided for passing through a selected oneof the openings 10 of the cage bar and thus preventing this cage bar from moving down .wardly through the sleeve beyond a desired amount. When however a board is passed beneath the cage, the cage bar or stem can moveiupwardly through the sleeve. 'When the cage is to be retained in an elevated position, it is simply necessary to remove the pin and then slide the cage bar upwardly and replace the pin in another opening 10 so that the cage bar will be held in the elevated position and the cage suspended in the raised position. The bolt 21 can then be loosened and the arm 20 mounted for swinging movement, the cage may be swung to one side where it will be out of the way or the device may be put in place with the arm 20 extending at right angles to the horizontal portion 1 1 of the bracket thus permitting the cage to be used in connection with a saw used for cutting long boards instead of short pieces of wood.

There has thus been provided a saw guard which will have a comparatively simple construction and will be very effective in operation.

We claim:

Y 1. In a saw guard, a cage for resting upon a table and enclosing a portion of a'saw extending upwardly through the table, a bracket including a portion mounted for horizontal swinging movement and having at its free enda sleeve downwardly and outwardly inclined, a stem connected with said cage and slidably passing through said sleeve and means for limiting downward sliding movement of said stem.

2. In a saw guard, a cage for resting upon atable and enclosing a portion of a saw extending upwardly through the table, a bracket, an arm pivotally connected with the bracket for horizontal swinging movement, a coupling carried by said arm and having an. outer end portion in-the form of a sleeve extending outwardly and downwardly at an incline, a stem pivotally-connected with said cage at the center of gravity thereof and slidably passing through said sleeve, and means for limiting downa horizontally disposed upper end portion,

a rod extension for the upper end portion of said bracket pivotally connected therewith for horizontal swinging movement, a

coupling upon said rod having its outer end portion in the form of a sleeve extending downwardly at an outward incline and slidably securing said stem, the stem being held against rotary movement I in said sleeve, and means for limiting downward movement of the stem through the sleeve.

In testimony whereof we set our hands.

ANTHONY G. PRABST. NORDAHL E. HO'LTE.

have hereunto 

